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All results from a given calculation for C4H6O (Furan, 2,5-dihydro-)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-229.875052
Energy at 298.15K-229.882519
HF Energy-229.875052
Nuclear repulsion energy175.893776
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3367 3046 8.22      
2 A1 3150 2849 10.17      
3 A1 1824 1650 0.11      
4 A1 1657 1499 1.05      
5 A1 1536 1389 9.00      
6 A1 1208 1093 0.53      
7 A1 1051 951 22.02      
8 A1 1010 914 16.78      
9 A1 809 732 7.85      
10 A2 3164 2862 0.00      
11 A2 1334 1207 0.00      
12 A2 1170 1058 0.00      
13 A2 1067 965 0.00      
14 A2 434 392 0.00      
15 B1 3167 2865 101.23      
16 B1 1304 1179 0.61      
17 B1 1135 1027 30.05      
18 B1 758 685 42.60      
19 B1 137 124 10.93      
20 B2 3342 3023 5.47      
21 B2 3145 2845 173.07      
22 B2 1646 1489 1.71      
23 B2 1503 1360 8.41      
24 B2 1452 1313 1.02      
25 B2 1256 1136 137.40      
26 B2 978 885 0.16      
27 B2 880 796 1.78      

Unscaled Zero Point Vibrational Energy (zpe) 21741.2 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 19667.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/daug-cc-pVTZ
ABC
0.27347 0.26842 0.14257

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.167
C2 0.000 1.161 0.375
C3 0.000 0.655 -1.038
C4 0.000 -0.655 -1.038
C5 0.000 -1.161 0.375
H6 0.877 1.760 0.601
H7 -0.877 1.760 0.601
H8 -0.877 -1.760 0.601
H9 0.877 -1.760 0.601
H10 0.000 1.299 -1.895
H11 0.000 -1.299 -1.895

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.40512.30052.30051.40512.04662.04662.04662.04663.32653.3265
C21.40511.50112.30152.32161.08611.08613.05833.05832.27503.3475
C32.30051.50111.31102.30152.16252.16253.04823.04821.07182.1340
C42.30052.30151.31101.50113.04823.04822.16252.16252.13401.0718
C51.40512.32162.30151.50113.05833.05831.08611.08613.34752.2750
H62.04661.08612.16253.04823.05831.75443.93353.52062.68604.0446
H72.04661.08612.16253.04823.05831.75443.52063.93352.68604.0446
H82.04663.05833.04822.16251.08613.93353.52061.75444.04462.6860
H92.04663.05833.04822.16251.08613.52063.93351.75444.04462.6860
H103.32652.27501.07182.13403.34752.68602.68604.04464.04462.5974
H113.32653.34752.13401.07182.27504.04464.04462.68602.68602.5974

picture of Furan, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 104.621 O1 C2 H6 109.814
O1 C2 H7 109.814 O1 C5 C4 104.621
O1 C5 H8 109.814 O1 C5 H9 109.814
C2 O1 C5 111.413 C2 C3 C4 109.673
C2 C3 H10 123.449 C3 C2 H6 112.417
C3 C2 H7 112.417 C3 C4 C5 109.673
C3 C4 H11 126.878 C4 C3 H10 126.878
C4 C5 H8 112.417 C4 C5 H9 112.417
C5 C4 H11 123.449 H6 C2 H7 107.729
H8 C5 H9 107.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.862      
2 C -0.280      
3 C -0.803      
4 C -0.803      
5 C -0.280      
6 H 0.377      
7 H 0.377      
8 H 0.377      
9 H 0.377      
10 H 0.761      
11 H 0.761      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.665 1.665
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.277 0.000 0.000
y 0.000 -26.102 0.000
z 0.000 0.000 -32.424
Traceless
 xyz
x -2.014 0.000 0.000
y 0.000 5.749 0.000
z 0.000 0.000 -3.735
Polar
3z2-r2-7.469
x2-y2-5.175
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.659 0.000 0.000
y 0.000 8.794 0.000
z 0.000 0.000 6.702


<r2> (average value of r2) Å2
<r2> 93.016
(<r2>)1/2 9.644